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Questions about measuring targets

2007-04-24 by gene_lugo

Hi All, 

I'm using a Canon i9100 and Printfix Pro Suite, current version. I am 
having some difficulty profiling, but I also have some basic 
questions as to what to expect.

I've printed a 729 patch three page target, making sure there are no 
settings producing any color management in the printer driver, and 
did the test for the best media settings.

The first question. Shouldn't the measured target screen view 
somewhat resemble the colors in the printed target? The colors are 
all off, and in most cases darker than the printed target. For 
example, on the third page, row 14, columns G through I show gray 
patches on the screen view, yet the printed target has very light 
yellow.

The final profile has a distinct red cast, and is darker and more 
contrasty than the on screen view. The gray ramp looks ok as far as 
gray values are concerned, but their is a section that has a very 
light red cast in the lighter area, and further down there is a 
slight yellow cast. How do you get rid of this?

In the test image, the shadows have a reddish cast, and the area 
behind the sunflower also has a red cast. Adding cyan doesn't remove 
it completely. But the question here is shouldn't the image after 
profiling be reasonably close to the screen image? Isn't that the 
whole purpose of profiling the monitor and the printer? 

I hope I am doing something wrong, so I can fix it by improving my 
technique. I have gotten good results with kodak premium plus glossy, 
admittedly not a great paper, and epson premium glossy photo - but I 
feel that it was more by accident than by design. In each case, the 
first printed results after profiling had contrast and color casts, 
which I was able to remove with the tweaks in Printfix Pro.

Any and all advice would be most welcomed.

Thanks.

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